621042972 has 24 divisors (see below), whose sum is σ = 1580836992. Its totient is φ = 188194800.

The previous prime is 621042971. The next prime is 621042973. The reversal of 621042972 is 279240126.

It is an interprime number because it is at equal distance from previous prime (621042971) and next prime (621042973).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621042971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2352304 + ... + 2352567.

It is an arithmetic number, because the mean of its divisors is an integer number (65868208).

Almost surely, 2^621042972 is an apocalyptic number.

It is an amenable number.

621042972 is an abundant number, since it is smaller than the sum of its proper divisors (959794020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621042972 is a wasteful number, since it uses less digits than its factorization.

621042972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704889 (or 4704887 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 621042972 is about 24920.7337773188. The cubic root of 621042972 is about 853.1797725115.

The spelling of 621042972 in words is "six hundred twenty-one million, forty-two thousand, nine hundred seventy-two".